Tunnel-mold form.



C. BRYNOLDT.

TUNNEL MOLD FORM.

C. BRYNOLDT.

TUNNEL MOLD FORM.

APPLICATON HLED APR. Il, 1917. 1,277,186. Patented Aug. 2T, 19m

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l n -*ML L -l "1J WITNESS v -J INVEN-ron.

ATTORN EYS.

CHRISTIAN BRYNOLDT, 0F PITTSBURGH, PENNSYLVANIA','ASSIGNOR TO BLAW STEEL CONSTRUCTION COMPANY, A CORPORATION OFNEW JERSEY.

TUNNEL-MOPD FORM.

Sipecicatonot Letters Patent.

Patented Aug. 27, 1918.

Application led April 11,1917. Serial No. 161,131.

VTo all whom t may concern.'

Be it known that I, CHRISTIAN BRYNoLDfr, a subject of the King 'of Denmark,'residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Tunnel-Mold Forms, 'of which the following is a specification. t

The inventionrelates to mold forms, and particularly to'that class; of mold forms used in theerection of concrete lined tunnels and mine shafts, and has for its principal objects the provision of a mold form wherein the traveler -upon which the form is used may be moved clear of the traiic through the tunnel or shaft; the provision of a mold form that may be easily collapsed and assembled in.

operative position; the provision of a mold form wherein the traveler may be'folded upward clear of the traic and serve as a working platform Yfor the operators while` the concrete is being applied to the ceiling; the provision of a mold form havin alternate panels of the side walls ande-ei lngv de,- tachable so that concrete, may be applied throughspaced openings in the form; and such other objects as may. hereinafter ap-` pear. One embodiment ofthe invention is illustrated in the accompanying drawlngs, Wherein- Figure 1 is a transverse section through al mold yform inoperative position with the traveler in position ready to support the form for moving; Fig. 2 is a longitudinal section ofthe upper portion of the.form

showing a, portion of the traveler in side elevation; an Fig. 3` is a transverse sectional` view of a portion of a form showmg a modlied application of thetraveler.

Referrin to the drawlngs, 4the Nceiling of the mold l form comprises aVP plurality of spaced truss members 1 connected lon 'tudinally of the tunnel by angles 2`\whic `provide supports for the fom shells or plates 3. As illustrated, every alternate plate isdetachable, such plates being removed to permit the concretey to be -lled between the earthfi and the form; When concrete has been 4applied'yuntil it is level with the opening the detachable plates aresecured to the form by bolts or any suitable means. The

trusses are adapted to be bolted together end to end by bolts 5 which pass through slots in thetopangles of the trusses. Thus two or 55 more forms may be secured toether and f spaced vertical angles 6 connected longitudi);

nally of the form by horizontalangles "which support the shells or plates 8. The

alternate plates ofthe side walls are made detachable sothat they may be removed for filling conereteithrough the ;openings 8. The upper ends of the side walls carry .a portion 9 of the ceilingV formwhich forms V the 'upper corners of the tunnel.' The side forms are 'pivoted `to the `ceiling form by means of bolts 10 and the portion 9 of the ceiling form is supported ri 'd with the side forms by triangu ar shape web lates 11. The side walls are adapted to collapse inward and swing onpthe bolts 10 when `it is desired to move the form.

In tunnels where the traiflc rails 1E are already in place and are close to the walls thereof and-elevated from thebottom of the tunnel,y the main side wallformsmust terminate at a point above the rails so that they will clear the rails when swung inwardly. The'side wall is completed, in such cases by a narrowV panel 13 made of angle iron, provided with a form plate 14 which `extends upward and is adapted to overlap the lower end ofthe wall form on the outside. The panel 13 and the lowerend of the wall form are'retailted in operative position by woodenk braces 16, indicated in dotted lines and the w'all forms are supported .upon the panels 413 with a palr of coperating wedges 15, in-

he form.

Where concrete is being applied in operat- .ing tunnels .it is necessary `to support the forms while in operation so that they will clear' all normal traiic through the tunnel and it is the object of this invention to provide a form that isself supporting while in operative position, and a traveler for conl 'veying the form 1nt0 operative osition that may be secured to the orm an swung clear of all -trac through the/tunnel or mine the operators which consists of 'a series ofl shaft while the form is in operative position. It is also the object to provide a traveler that may be y utilized while not conveying the form, as a working platform for supporting the operators while they are filling the con crete through the openings in the mold.

The traveler consists of a pairr of rectangular frames built of angle iron 20 which are connected longitudinally by angle irons 21 and 22. The upper ends of the angles 2O are pivoted to the lower truss member 23 by the bolts 24, ,and the lower ends of the traveler areA provided with turn buckle jacks 25, the upper ends of which are secured to the angles 21, while thelower ends project through holes 26, in the angles 22, and are pivoted to clips 27 by bolts 28. The clips are .connected longitudinally of the form by rail shoes 29 rmly secured thereto and thetravelers are secured to each other adjacent their lower ends by connecting angles 3Q which are -bolted to the clips 27 by bolts 31. As this form is particularly designed for use in a mine shaft having a considerable downward angle, wheels or rollers are not necessary where the form will slide into a new position when the anchors have been released.

The travelers are retainedagainst distortion or lateral displacement by the diagonal tie rods 32 which are removed when the traveler is not in operative position for moving the form.

When the form has been moved, the angles 30 are removed and the travelers swing upward until they have reached the horizontal position indicated by dotted line, and are held in Asuch position by meansof hook bolts 33 suspended from the ceiling trusses 1. In this position they provide a platform 34 for wooden planks secured longitudinally upon the traveler frame.

Assuming that the mold is in collapsed position upon the traveler, the operation is as follows. The turn buckle jacks 25 upon`the traveler are screwed so as to elevate the ceiling mold toproper height. .The panels 13 are inserted in position. The side forms are then swung outward by the turn buckles 17,

the wedges then inserted between the forms and the panels, and the braces 16 wedged' in the position indicated in dotted lines.

Wooden braces 35 are then inserted between f structed while the form is being moved, which is a very short interval compared with the filling operation.

Fig. 3 illustrates a form having a ceiling mold 36 and a wall mold 37 which may be moved inward with respect to the ceiling mold. A traveler 38 similar to the one-V previously described is pivoted to the ceiling truss 39 by bolts 40. This traveler may be swung toward the side formso as to clear traffic upon the rail 12.

It is obvious that many changes may be made in the details of the construction and the invention is not limited to the specific means herein illustrated and described.

What I claim is:

1. A tunnel mold' for forming concrete tunnels comprising a form for supporting the concrete and a collapsible traveler for supporting the form while the form is being moved to operative position, the said traveler being carried bythe form and adapted to be moved into substantially horizontal position beneath the upper portion of the form so as to permit free passage of objects through the tunnel, the said traveler also being provided with a platform for supporting operatives when the form is in operative position.

2. A tunnel mold for forming concrete tunnels comprising a form for supporting the concrete, a traveler for supporting the f orm while the form is being moved to operative position, the said traveler being pivoted to the form and adapted to be swung upward beneath the upper portion of the form clear of the tunnel traffic, and an operating platform supported by the traveler when in elevated position adapted to support the operators while filling the form.

3. A traveler for supporting' a concrete tunnel'mold form comprising a plurality of columns extending from the ground upward into engagement with the form, means for extending the traveler so as to lift the form into operative position, means for securing` the traveler to the form whereby the end thereof engaging the ground may be swung clear of the tunnel trailic, and means for securing the traveler in such position.

4. 1A tunnel mold form comprising a oeiling form, a side form secured to the ceiling /form and extending within a short distance from the bottom of the tunnel, a form panel adapted to fit between the ground and the side form with a space between the side form andthe panel, a plate adapted to bridge the space between the panel and the side form and wedges resting -upon the panel adapted Vto support the side form and hold it in operative position.

5. A tunnel mold for forming concrete tunnels comprising a collapsible form for supporting the concrete, and a traveler carried by the form for supporting the form when the form is in collapsed position, adapted When in operative position to Asupport the entire form, the said traveler being carried by theV form and adapted to be moved adjacent the. shell thereof so as to permit of free passage of objects through the tunnel vWhen the form is in operativel position. j

6. A tunnel mold for forming concrete tunnels comprising a collapsible form for supporting the concrete, a traveler carried by the form for supporting the form when Ithe forrn is in collapsed position, adapted when in operative position to vsupport the entire form, the said traveler being carrie by the form and adapted to be moved adjacent the shell thereof so. a's permitof free passage of objects through the tunnel when the form is in operative position and means foradjusting the form into operative position While supported upon the traveler. A tunnel mold for forming concrete tunnels comprising a collapsible form for supporting the concrete, a traveler for supporting the form whille the form is being Inovedto operative position, the said trav- -eler being carried'by the form and adapted to be elevated I,into substantially horizontal position so as to'permit'free passage of objects through the tunnel beneath the traveler when the form' is in operative position.

i CHR. BRYNOLDT. 

